Input: 2200PSI Output: 50PSI~22PSI Flux: 12levels in adjustment Flow range: 0~4,0~8,0~15,0~25LPM Outlet: Diss or Barb British connectionInput: 2200PSIOutput: 50PSI~22PSIFlux: 12levels in adjustmentFlow range: 0~4,0~8,0~15,0~25LPMOutlet: Diss or BarbAluminium or Brass body Medical Oxygen Regulator(CGA540-UN)